Home / 1,809,439.20-2,715,195.60-688,312.80

Finding the Fourth Proportional to 1,809,439.20, 2,715,195.60 and 688,312.80

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Solution

The fourth proportional to 1,809,439.20, 2,715,195.60 and 688,312.80 is: 1,032,863.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,809,439.20 : 2,715,195.60 = 688,312.80 : x
  2. Step 2: Convert to fraction form
    1,809,439.20/2,715,195.60 = 688,312.80/x
  3. Step 3: Cross multiply
    1,809,439.20x = 2,715,195.60 × 688,312.80
  4. Step 4: Simplify right side
    1,809,439.20x = 1,868,903,885,983.68
  5. Step 5: Solve for x
    x = 1,868,903,885,983.68/1,809,439.20
  6. Step 6: Final answer
    x = 1,032,863.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.